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85b05318 JR |
1 | /* |
2 | * Copyright (C) 2020 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com> | |
3 | * | |
4 | * SPDX-License-Identifier: LGPL-2.1-only | |
5 | * | |
6 | */ | |
7 | ||
c9e313bc SM |
8 | #include <common/dynamic-buffer.hpp> |
9 | #include <common/error.hpp> | |
10 | #include <common/hashtable/hashtable.hpp> | |
11 | #include <common/hashtable/utils.hpp> | |
12 | #include <common/macros.hpp> | |
13 | #include <common/mi-lttng.hpp> | |
14 | #include <lttng/log-level-rule-internal.hpp> | |
85b05318 JR |
15 | #include <lttng/log-level-rule.h> |
16 | #include <stdbool.h> | |
17 | #include <stdlib.h> | |
18 | ||
19 | static bool is_log_level_rule_exactly_type(const struct lttng_log_level_rule *rule) | |
20 | { | |
21 | enum lttng_log_level_rule_type type = | |
22 | lttng_log_level_rule_get_type(rule); | |
23 | ||
24 | return type == LTTNG_LOG_LEVEL_RULE_TYPE_EXACTLY; | |
25 | } | |
26 | ||
27 | static bool is_log_level_rule_at_least_as_severe_type(const struct lttng_log_level_rule *rule) | |
28 | { | |
29 | ||
30 | enum lttng_log_level_rule_type type = | |
31 | lttng_log_level_rule_get_type(rule); | |
32 | ||
33 | return type == LTTNG_LOG_LEVEL_RULE_TYPE_AT_LEAST_AS_SEVERE_AS; | |
34 | } | |
35 | ||
36 | enum lttng_log_level_rule_type lttng_log_level_rule_get_type( | |
37 | const struct lttng_log_level_rule *rule) | |
38 | { | |
39 | return rule ? rule->type : LTTNG_LOG_LEVEL_RULE_TYPE_UNKNOWN; | |
40 | } | |
41 | ||
42 | struct lttng_log_level_rule *lttng_log_level_rule_exactly_create( | |
43 | int level) | |
44 | { | |
45 | struct lttng_log_level_rule *rule = NULL; | |
46 | ||
64803277 | 47 | rule = zmalloc<lttng_log_level_rule>(); |
85b05318 JR |
48 | if (!rule) { |
49 | goto end; | |
50 | } | |
51 | ||
52 | rule->type = LTTNG_LOG_LEVEL_RULE_TYPE_EXACTLY; | |
53 | rule->level = level; | |
54 | ||
55 | end: | |
56 | return rule; | |
57 | } | |
58 | ||
59 | enum lttng_log_level_rule_status lttng_log_level_rule_exactly_get_level( | |
60 | const struct lttng_log_level_rule *rule, int *level) | |
61 | { | |
62 | enum lttng_log_level_rule_status status = | |
63 | LTTNG_LOG_LEVEL_RULE_STATUS_OK; | |
64 | ||
65 | if (!rule || !level || !is_log_level_rule_exactly_type(rule)) { | |
66 | status = LTTNG_LOG_LEVEL_RULE_STATUS_INVALID; | |
67 | goto end; | |
68 | } | |
69 | ||
70 | *level = rule->level; | |
71 | end: | |
72 | return status; | |
73 | } | |
74 | ||
75 | struct lttng_log_level_rule * | |
76 | lttng_log_level_rule_at_least_as_severe_as_create(int level) | |
77 | { | |
78 | struct lttng_log_level_rule *rule = NULL; | |
79 | ||
64803277 | 80 | rule = zmalloc<lttng_log_level_rule>(); |
85b05318 JR |
81 | if (!rule) { |
82 | goto end; | |
83 | } | |
84 | ||
85 | rule->type = LTTNG_LOG_LEVEL_RULE_TYPE_AT_LEAST_AS_SEVERE_AS; | |
86 | rule->level = level; | |
87 | ||
88 | end: | |
89 | return rule; | |
90 | } | |
91 | ||
92 | enum lttng_log_level_rule_status | |
93 | lttng_log_level_rule_at_least_as_severe_as_get_level( | |
94 | const struct lttng_log_level_rule *rule, int *level) | |
95 | { | |
96 | enum lttng_log_level_rule_status status = LTTNG_LOG_LEVEL_RULE_STATUS_OK; | |
97 | ||
98 | if (!rule || !level || | |
99 | !is_log_level_rule_at_least_as_severe_type(rule)) { | |
100 | status = LTTNG_LOG_LEVEL_RULE_STATUS_INVALID; | |
101 | goto end; | |
102 | } | |
103 | ||
104 | *level = rule->level; | |
105 | end: | |
106 | return status; | |
107 | } | |
108 | ||
109 | void lttng_log_level_rule_destroy(struct lttng_log_level_rule *log_level_rule) | |
110 | { | |
111 | free(log_level_rule); | |
112 | } | |
113 | ||
85b05318 JR |
114 | ssize_t lttng_log_level_rule_create_from_payload( |
115 | struct lttng_payload_view *view, | |
116 | struct lttng_log_level_rule **_rule) | |
117 | { | |
118 | ssize_t ret; | |
119 | size_t offset = 0; | |
120 | struct lttng_log_level_rule *rule = NULL; | |
121 | const struct lttng_log_level_rule_comm *comm = | |
122 | (const struct lttng_log_level_rule_comm *) | |
123 | view->buffer.data; | |
124 | ||
125 | offset += sizeof(*comm); | |
126 | ||
127 | if (!_rule) { | |
128 | ret = -1; | |
129 | goto end; | |
130 | } | |
131 | ||
132 | if (view->buffer.size < sizeof(*comm)) { | |
133 | ret = -1; | |
134 | goto end; | |
135 | } | |
136 | ||
137 | switch (comm->type) { | |
138 | case LTTNG_LOG_LEVEL_RULE_TYPE_EXACTLY: | |
139 | rule = lttng_log_level_rule_exactly_create((int) comm->level); | |
140 | break; | |
141 | case LTTNG_LOG_LEVEL_RULE_TYPE_AT_LEAST_AS_SEVERE_AS: | |
142 | rule = lttng_log_level_rule_at_least_as_severe_as_create( | |
143 | (int) comm->level); | |
144 | break; | |
145 | default: | |
146 | abort(); | |
147 | } | |
148 | ||
149 | if (!rule) { | |
150 | ret = -1; | |
151 | goto end; | |
152 | } | |
153 | ||
154 | *_rule = rule; | |
155 | ret = offset; | |
156 | ||
157 | end: | |
158 | return ret; | |
159 | } | |
160 | ||
85b05318 JR |
161 | int lttng_log_level_rule_serialize(const struct lttng_log_level_rule *rule, |
162 | struct lttng_payload *payload) | |
163 | { | |
164 | int ret; | |
165 | struct lttng_log_level_rule_comm comm; | |
166 | ||
167 | ||
168 | if (!rule) { | |
169 | ret = 0; | |
170 | goto end; | |
171 | } | |
172 | ||
173 | comm.type = (int8_t) rule->type; | |
174 | comm.level = (int32_t) rule->level; | |
175 | ||
176 | DBG("Serializing log level rule of type %d", rule->type); | |
177 | ret = lttng_dynamic_buffer_append(&payload->buffer, &comm, | |
178 | sizeof(comm)); | |
179 | if (ret) { | |
180 | goto end; | |
181 | } | |
182 | ||
183 | end: | |
184 | return ret; | |
185 | } | |
186 | ||
85b05318 JR |
187 | bool lttng_log_level_rule_is_equal(const struct lttng_log_level_rule *a, |
188 | const struct lttng_log_level_rule *b) | |
189 | { | |
190 | bool is_equal = false; | |
191 | ||
192 | if (a == NULL && b == NULL) { | |
193 | /* Both are null. */ | |
194 | is_equal = true; | |
195 | goto end; | |
196 | } | |
197 | ||
198 | if (a == NULL || b == NULL) { | |
199 | /* One is NULL.*/ | |
200 | goto end; | |
201 | } | |
202 | ||
203 | if (a == b) { | |
204 | /* Same object.*/ | |
205 | is_equal = true; | |
206 | goto end; | |
207 | } | |
208 | ||
209 | if (a->type != b->type) { | |
210 | goto end; | |
211 | } | |
212 | ||
213 | if (a->level != b->level) { | |
214 | goto end; | |
215 | } | |
216 | ||
217 | is_equal = true; | |
218 | ||
219 | end: | |
220 | return is_equal; | |
221 | } | |
222 | ||
85b05318 JR |
223 | struct lttng_log_level_rule *lttng_log_level_rule_copy( |
224 | const struct lttng_log_level_rule *source) | |
225 | { | |
226 | struct lttng_log_level_rule *copy = NULL; | |
227 | ||
a0377dfe | 228 | LTTNG_ASSERT(source); |
85b05318 | 229 | |
64803277 | 230 | copy = zmalloc<lttng_log_level_rule>(); |
85b05318 JR |
231 | if (!copy) { |
232 | goto end; | |
233 | } | |
234 | ||
235 | copy->type = source->type; | |
236 | copy->level = source->level; | |
237 | end: | |
238 | return copy; | |
239 | } | |
240 | ||
85b05318 JR |
241 | void lttng_log_level_rule_to_loglevel( |
242 | const struct lttng_log_level_rule *log_level_rule, | |
243 | enum lttng_loglevel_type *loglevel_type, | |
244 | int *loglevel_value) | |
245 | { | |
a0377dfe | 246 | LTTNG_ASSERT(log_level_rule); |
85b05318 JR |
247 | |
248 | switch (log_level_rule->type) { | |
249 | case LTTNG_LOG_LEVEL_RULE_TYPE_EXACTLY: | |
250 | *loglevel_type = LTTNG_EVENT_LOGLEVEL_SINGLE; | |
251 | break; | |
252 | case LTTNG_LOG_LEVEL_RULE_TYPE_AT_LEAST_AS_SEVERE_AS: | |
253 | *loglevel_type = LTTNG_EVENT_LOGLEVEL_RANGE; | |
254 | break; | |
255 | default: | |
256 | abort(); | |
257 | } | |
258 | ||
259 | *loglevel_value = log_level_rule->level; | |
260 | } | |
261 | ||
85b05318 JR |
262 | unsigned long lttng_log_level_rule_hash( |
263 | const struct lttng_log_level_rule *log_level_rule) | |
264 | { | |
265 | unsigned long hash; | |
266 | enum lttng_log_level_rule_status llr_status; | |
267 | int log_level_value; | |
268 | enum lttng_log_level_rule_type type; | |
269 | ||
a0377dfe | 270 | LTTNG_ASSERT(log_level_rule); |
85b05318 JR |
271 | |
272 | type = lttng_log_level_rule_get_type(log_level_rule); | |
273 | ||
274 | switch (type) { | |
275 | case LTTNG_LOG_LEVEL_RULE_TYPE_EXACTLY: | |
276 | llr_status = lttng_log_level_rule_exactly_get_level( | |
277 | log_level_rule, &log_level_value); | |
278 | break; | |
279 | case LTTNG_LOG_LEVEL_RULE_TYPE_AT_LEAST_AS_SEVERE_AS: | |
280 | llr_status = lttng_log_level_rule_at_least_as_severe_as_get_level( | |
281 | log_level_rule, &log_level_value); | |
282 | break; | |
283 | default: | |
284 | abort(); | |
285 | break; | |
286 | } | |
287 | ||
a0377dfe | 288 | LTTNG_ASSERT(llr_status == LTTNG_LOG_LEVEL_RULE_STATUS_OK); |
85b05318 JR |
289 | |
290 | hash = hash_key_ulong((void *) (unsigned long) type, lttng_ht_seed); | |
291 | ||
292 | hash ^= hash_key_ulong((void *) (unsigned long) log_level_value, | |
293 | lttng_ht_seed); | |
294 | ||
295 | return hash; | |
296 | } | |
6a751b95 | 297 | |
6a751b95 JR |
298 | enum lttng_error_code lttng_log_level_rule_mi_serialize( |
299 | const struct lttng_log_level_rule *rule, | |
300 | struct mi_writer *writer) | |
301 | { | |
302 | int ret; | |
303 | enum lttng_error_code ret_code; | |
304 | enum lttng_log_level_rule_status status; | |
305 | const char *element_str = NULL; | |
306 | int level; | |
307 | ||
a0377dfe FD |
308 | LTTNG_ASSERT(rule); |
309 | LTTNG_ASSERT(writer); | |
6a751b95 JR |
310 | |
311 | switch (lttng_log_level_rule_get_type(rule)) { | |
312 | case LTTNG_LOG_LEVEL_RULE_TYPE_EXACTLY: | |
313 | status = lttng_log_level_rule_exactly_get_level(rule, &level); | |
314 | element_str = mi_lttng_element_log_level_rule_exactly; | |
315 | break; | |
316 | case LTTNG_LOG_LEVEL_RULE_TYPE_AT_LEAST_AS_SEVERE_AS: | |
317 | element_str = mi_lttng_element_log_level_rule_at_least_as_severe_as; | |
318 | status = lttng_log_level_rule_at_least_as_severe_as_get_level( | |
319 | rule, &level); | |
320 | break; | |
321 | default: | |
322 | abort(); | |
323 | break; | |
324 | } | |
325 | ||
a0377dfe | 326 | LTTNG_ASSERT(status == LTTNG_LOG_LEVEL_RULE_STATUS_OK); |
6a751b95 JR |
327 | |
328 | /* Open log level rule element. */ | |
329 | ret = mi_lttng_writer_open_element( | |
330 | writer, mi_lttng_element_log_level_rule); | |
331 | if (ret) { | |
332 | goto mi_error; | |
333 | } | |
334 | ||
335 | /* Log level rule type element. */ | |
336 | ret = mi_lttng_writer_open_element(writer, element_str); | |
337 | if (ret) { | |
338 | goto mi_error; | |
339 | } | |
340 | ||
341 | /* Level. */ | |
342 | ret = mi_lttng_writer_write_element_signed_int( | |
343 | writer, mi_lttng_element_log_level_rule_level, level); | |
344 | if (ret) { | |
345 | goto mi_error; | |
346 | } | |
347 | ||
348 | /* Close log level rule type element. */ | |
349 | ret = mi_lttng_writer_close_element(writer); | |
350 | if (ret) { | |
351 | goto mi_error; | |
352 | } | |
353 | ||
354 | /* Close log level rule element. */ | |
355 | ret = mi_lttng_writer_close_element(writer); | |
356 | if (ret) { | |
357 | goto mi_error; | |
358 | } | |
359 | ||
360 | ret_code = LTTNG_OK; | |
361 | goto end; | |
362 | ||
363 | mi_error: | |
364 | ret_code = LTTNG_ERR_MI_IO_FAIL; | |
365 | end: | |
366 | return ret_code; | |
367 | } |